What is the velocity after parachute opens?

[deuceszbigz]

hi,

i am having trouble with figuring out this problem.

A drag racer, starting from rest, speeds up for 402 m with an acceleration of +23.0 m/s2. A parachute then opens, slowing the car down with an acceleration of -6.70 m/s2. How fast is the racer moving 3.35 102 m after the parachute opens?

I have no clue where to start or what to do. please help!

thanks,

Z

 

[learningphysics]

hi,

i am having trouble with figuring out this problem.

A drag racer, starting from rest, speeds up for 402 m with an acceleration of +23.0 m/s2. A parachute then opens, slowing the car down with an acceleration of -6.70 m/s2. How fast is the racer moving 3.35 102 m after the parachute opens?

I have no clue where to start or what to do. please help!

thanks,

Z

Find the speed the moment the parachute opens. From that you can answer the question... What exactly is the question though... "How fast is the racer moving 3.35 102 m after the parachute opens?"

is it 3.35m or 102m?

 

[deuceszbigz]

i mis-typed. it is supposed to be 3.35*10^2